DbQuery Redirect Error - Blank Page -

[lawanalog]

Please help is needed -

My presta-website works well but lately the redirect after authentication shows blank.

The error log indicates issue with the DbQuery Script, can you help (http://bml.com.ng/)

I will share access where necessary for remote assistance.

    public function from($table, $alias = null)
    {
        if (!empty($table))
            $this->query['from'][] = '`'._DB_PREFIX_.$table.'`'.($alias ? ' '.$alias : '');

        return $this;

DbQuery.php